# CVE-2026-74920: Document Gallery <= 5.1.1 - Reflected XSS via data-shortcode Attribute

> Reflected XSS in Document Gallery plugin allows attackers to execute scripts in victim browsers, potentially compromising admin accounts.

- **Severity:** High 7.1 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** A user has to click or open something
- **Fix available:** No
- **Published:** 15 Oct 2026
- **Updated:** 15 Oct 2026
- **Also known as:** GHSA-gqgr-238r-8rvc

## What is CVE-2026-74920?

CVE-2026-74920 is a high-severity cross-site scripting vulnerability in Unknown Document Gallery, published on 15 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.

### Official description

The Document Gallery WordPress plugin through 5.1.1 does not properly sanitise and escape user input before reflecting it inside an HTML attribute in the response of an unauthenticated AJAX action, leading to a Reflected Cross-Site Scripting vulnerability which can be exploited against any visitor, including a logged-in administrator.

Weakness: CWE-79 (Improper Neutralization of Input During Web Page Generation)

## Which versions are affected by CVE-2026-74920?


## How do I fix CVE-2026-74920?

No fix has been published for CVE-2026-74920 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-74920 being exploited?

There is no known exploitation of CVE-2026-74920 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-74920 and fix it if it is affected.

What it is: CVE-2026-74920 is a high-severity cross-site scripting vulnerability in Unknown Document Gallery, published on 15 Oct 2026. An attacker can exploit it over the internet without logging in, and only if a user opens a file or follows a link.
Exploitation: There is no known exploitation of CVE-2026-74920 in the wild and no public exploit code.

Affected product: Unknown Document Gallery. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-74920/ (Markdown: https://insights.sbomify.com/CVE-2026-74920/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-74920
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-74920
- OSV: https://osv.dev/vulnerability/CVE-2026-74920

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-74920/
Summaries are generated and may contain mistakes; the official description above is the record.